In reinforced concrete (RC), material nonlinearity is evident even in its undamaged state due
to the inherent microstructure. In the present work, damage progression in RC structure at …

A damage localization method based on the time reversal focusing of the mode-converted
scattered Lamb wave is proposed for plate structures with a non-symmetric defect in the …

This paper presents a new structural health monitoring strategy based on a deep learning
architecture that uses nonlinear ultrasonic signals for the automatic assessment of breathing …

Lamb wave propagation in the anisotropic material is characterized by the prominent
directivity of wave energy transfer governed by the fiber direction. Due to this anisotropic …

Traditional non-destructive evaluation (NDE) and structural health monitoring (SHM)
systems are used to analyse that a structure is free of any harmful damage. However, these …

Second harmonic generation is one of the most sensitive and reliable nonlinear elastic
signatures for micro-damage assessment. However, its detection requires powerful …

Nonlinear ultrasonic methods typically measure second harmonic waves for a rapid and
sensitive detection of material micro-cracks. However, fictitious second harmonics generated …

Time reversal (TR) signal processing is an effective tool to exploit a reverberant environment
for the intentional focusing of airborne, audible sound. A previous room acoustics TR study …

In different engineering fields, there is a strong demand for diagnostic methods able to
provide detailed information on material defects. Low velocity impact damage can …

Nonlinear ultrasound techniques have shown greater sensitivity to microcracks and they can
be used to detect structural damages at their early stages. However, there is still a lack of …